Given, v₁ = 18 km/h, v₂ = 36 km/h and t = 5 min = 5/60 h = 1/12 h Acceleration, a = v₁ – v₂ / t = 36 – 18/ 1/12 = 216 kmh⁻²

If the displacement of an object is proportional to the square of the time taken, the body is moving with a uniform acceleration because it will follow Newton’s second equation of motion for a particular initial velocity. From second equation ...

After half circle the given particle will reach the point opposite to the diameter i.e. from point “A” to point “B” (r + r = 2r {diameter}). And we know that displacement is the shortest path between starting and ending ...